I have never been a fan of intel bulletins or these stat boosters that increase speed, armor, or lower costs of X, etc. because they would lead to specialization or worse, spamming of a certain type of unit in COH2. And while stacking thankfully has been removed, people do still stack related bulletins for a certain unit (i.e. 10% Veterancy Gain, 5% accuracy, 6% Reload Rate for Howitzers).
And I hope DoW3 doesn't have something similar to intel bulletins. I would hate to see players just specialize or spam a certain type of unit just because they randomly got a booster and see little unit composition variety.